BISMARCK - Documents show North Dakota recorded nearly 300 oil pipeline spills in less than two years and officials say they didn't report any of them to the public.According to records obtained by The Associated Press, the pipeline spills are among some 750 ''oil field incidents'' that have occurred since January 2012 without public notification.
State regulators say they are reviewing the policies for when to publicly report spills.
They are not obliged to do so under state law.
Farmers and environmentalists believe the problem will grow and possibly threaten farmland and water sources.
The state is the nation's second largest oil producer, with 1 million barrels a day.
It has been criticized after state and pipeline company officials kept a massive spill in northwestern North Dakota quiet for 11 days.